Android Open Source - DynamicViewPager Main Activity

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License

The source code is released under:

Apache License

Java Source Code

package de.wackernagel.dynamicviewpager;
//from ww w .  j  a v  a  2 s.  c o m
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;
import de.wackernagel.android.dynamicviewpager.adapter.DynamicTabFragmentPagerAdapter;
import de.wackernagel.android.dynamicviewpager.view.LockableViewPager;

public class MainActivity extends ActionBarActivity {
  private DynamicTabFragmentPagerAdapter adapter;
  private LockableViewPager pager;
  private TextView log;
  private int pageCount = 3;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    
    // load views
    pager = (LockableViewPager) findViewById(R.id.viewPager);
    adapter = new DynamicTabFragmentPagerAdapter( this, getSupportFragmentManager(), pager, getSupportActionBar() );
    log = (TextView) findViewById(R.id.logView);
    
    // generate first tree fragments
    for( int position = 1; position <= pageCount; position++) {
      Bundle arguments = new Bundle();
      arguments.putString( SimpleFragment.CONTENT_KEY, String.valueOf( position ) );
      adapter.addPage( String.valueOf( position ), SimpleFragment.class, arguments );
    }
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.main, menu);
    
    // use one button for ViewPager locking
    MenuItem lockItem = menu.findItem(R.id.lock);
    lockItem.setTitle( pager.isLocked() ? "Unlock" : "Lock" );
    
    return true;
  }
  
  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch( item.getItemId() ) {
      case R.id.add:
        return addPage();
      case R.id.remove:
        return removePage();
      case R.id.replace:
        return replacePage();
      case R.id.lock:
        return lockPager();
      case R.id.log:
        return logPager();
      default:
        return super.onOptionsItemSelected( item );
    }
  }

  private boolean logPager() {
    String log = "";
    for( int position = 0; position < adapter.getCount(); position++ ) {
      Fragment f = adapter.getFragmentInstance( position );
      if( f instanceof SimpleFragment ) {
        log += ( (SimpleFragment) f).getContent();
      }
    }
    this.log.setText( "Log: " + log );
    return true;
  }

  private boolean lockPager() {
    pager.toggleLock();
    supportInvalidateOptionsMenu();
    return true;
  }

  private boolean replacePage() {
    pageCount++;
    Bundle arguments = new Bundle();
    arguments.putString( SimpleFragment.CONTENT_KEY, String.valueOf( pageCount ) );
    adapter.replacePage( getSupportActionBar().getSelectedNavigationIndex(), String.valueOf( pageCount ), SimpleFragment.class, arguments );
    return true;
  }

  private boolean removePage() {
    adapter.removePage( getSupportActionBar().getSelectedNavigationIndex() );
    return true;
  }

  private boolean addPage() {
    pageCount++;
    Bundle arguments = new Bundle();
    arguments.putString( SimpleFragment.CONTENT_KEY, String.valueOf( pageCount ) );
    adapter.addPage( String.valueOf( pageCount ), SimpleFragment.class, arguments );
    return true;
  }

}

Java Source Code List

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